123539106793 has 2 divisors, whose sum is σ = 123539106794. Its totient is φ = 123539106792.

The previous prime is 123539106781. The next prime is 123539106797. The reversal of 123539106793 is 397601935321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97960862169 + 25578244624 = 312987^2 + 159932^2 .

It is a cyclic number.

It is not a de Polignac number, because 123539106793 - 2¹³ = 123539098601 is a prime.

It is not a weakly prime, because it can be changed into another prime (123539106797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61769553396 + 61769553397.

It is an arithmetic number, because the mean of its divisors is an integer number (61769553397).

Almost surely, 2^123539106793 is an apocalyptic number.

It is an amenable number.

123539106793 is a deficient number, since it is larger than the sum of its proper divisors (1).

123539106793 is an equidigital number, since it uses as much as digits as its factorization.

123539106793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 49.

The spelling of 123539106793 in words is "one hundred twenty-three billion, five hundred thirty-nine million, one hundred six thousand, seven hundred ninety-three".